Release: spawn-fcgi 1.6.0

Removed limits for -C phpchildren option, which now justs sets PHP_FCGI_CHILDREN if phpchildren >= 0 (default: ommited); php's default is PHP_FCGI_CHILDREN = 0, which means that the master process is the worker process. (not the same as PHP_FCGI_CHILDREN = 1, which results in one master watching its child). Instead of using the -C option you can now just set the environment var before invoking spawn-fcgi.